鍵和花鍵的公差與檢測-資料下載頁
2025-01-18 20:47本頁面
【正文】 he centering ways of rectangular spline connections 國家標(biāo)準(zhǔn) GB／ T11442022《 矩形花鍵尺寸、公差和檢驗 》 規(guī)定矩形花鍵用 小徑定心 National standard GB／ T1144—2022 《 The sizes,tolerances and tests of square splines》 provide that square splines use small diameter fixed center 矩形花鍵結(jié)合的極限與配合 The limits and fits of the binations in square splines 分為兩種情況： It is divided into two conditions: ? 一般用途矩形花鍵； General service square splines ? 精密傳動用矩形花鍵。 Square splines for precision transmission ? 為了減少加工和檢驗內(nèi)花鍵用的花鍵拉刀和花鍵量規(guī)的規(guī)格和數(shù)量，采用 基孔制 配合。 We adopt basic hole system fits to reduce the specifications and quantities of spline gauges and spline broaches which are used to reduce processing and testing internal splines. 形位精度設(shè)計 The design of form and position precisions ★ 因為小徑是花鍵聯(lián)結(jié)的定心尺寸 ， 必須保證其配合性質(zhì) ， 所 以內(nèi) 、 外花鍵小徑 d的極限尺寸應(yīng)遵守包容原則 ， 即花鍵孔和軸的小徑不能超越最大實體邊界 。 Because minor diameter is the centering dimension of spline couplings and must guarantee its fit the limit sizes of inner and external splines’ minor diameters should abide by enveloping principles that the minor diameters of spline holes and shafts are not supposed to overstep maximum material boundary. ★ 為保證裝配性和鍵側(cè)受力均勻 ， 規(guī)定 花鍵的位置度公差應(yīng)遵守最大實體原則 ， 即不能夠超過實效邊界 。 To guarantee the assemblabilities and key side to get uniform position tolerances of splines are stipulated to abide by maximum material principles that the position tolerances are not allowed to overstep the actual effect boundary. 花鍵圖樣標(biāo)注示例 Examples of spline pattern annotations 表面粗糙度的選擇： Choice of surface roughness 內(nèi)、外花鍵標(biāo)注示例：Examples of inner and external spline pattern annotations ? 矩形花鍵的尺寸公差帶代號和配合代號按照花鍵規(guī)格規(guī)定的次序標(biāo)注 ， 即 N d D B。 即： Square splines’ size tolerance zone codes and fit codes are labeled according to the orders set by spline specifications. ? 內(nèi)花鍵： 6 28H6 32H10 7H9 Inner splines ? 外花鍵： 6 28g5 32a11 7f7 External splines ? 花鍵副： Spline pairs 79111056286 fHaHgH ???
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